Nature Of C-X Bond
Chapter Name : Haloalkanes And Haloarenes |
Sub Topic Code : 102_12_10_03_01 |
Topic Name : Nature Of C-X Bond |
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Sub Topic Name : Nature Of C-X Bond |
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Introduction
1. Since halogen atoms are more electro-negative than carbon, the carbon-halogen bond of alkyl halide is polarized. 2.carbon atom bears a partial positive charge 3.halogen atom bears a partial negative charge. 4.Since the size of halogen atom increases as we go down the group in the periodic table, ( fluorine atom is the smallest and iodine atom, the largest ), the carbon-halogen bond length also increases from C—F to C—I.
Pre-Requisites:
Elements, Bond
Activity:
1. Synthetic halogen compounds, viz. 2. Chloroquine is used for the treatment of malaria. 3. Halothane is used as an anesthetic during surgery.
Real Life Question:
What are haloarenes and haloalkanes ?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Haloalkanes | Haloalkanes contain halogen atom(s) attached to the sp3 hybridized carbon atom of an alkyl group. |
| Haloarenes | Haloarenes contain halogen atom(s) attached to sp2 hybridized carbon atom(s) of an aryl group. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| chloramphenicol | Chlorine containing antibiotic, chloramphenicol, produced by soil microorganisms is very effective for the treatment of typhoid fever. |
Real life uses :
1. Synthetic halogen compounds, viz. 2. Chloroquine is used for the treatment of malaria. 3. Halothane is used as an anesthetic during surgery.
Places to visit :
pharmacy
Practical examples around us
| Examples | Explainations |
|---|---|
| chloroquine | chloroquine is used for the treatment of malaria. |
| halothane | halothane is used as an anesthetic during surgery. |
What you learn in Theory:
1. Since halogen atoms are more electro-negative than carbon, the carbon-halogen bond of alkyl halide is polarized. 2.carbon atom bears a partial positive charge 3.halogen atom bears a partial negative charge. 4.Since the size of halogen atom increases as we go down the group in the periodic table, ( fluorine atom is the smallest and iodine atom, the largest ), the carbon-halogen bond length also increases from C—F to C—I.
What you learn in Practice:
Haloalkanes and Haloarenes are classified based on the number of halogen compounds contained in them